Hello I live in Brazil and I'm having issues with myGX90

I was using Vivo internet two days ago normal but after moving to a new house and started using Claro Internet my route doesn't work.

I connected the correct port from the modem to the router and the router started pulsing orange after a while it changed to red after a while it changed to white and then returned to pulsing orange. 
Because of that I even can connect using the port URL 192.168.1.1 because it also stops working when the color changes.

I called the Claro, and the technical support said that the IPV4 port is already open and the problem is with the Router but I was using it two ago normally with another Provider. 
Can someone help me?

@Update I configured a Google Wi fi and everything goes fine. I don't know what is happening with my Archer gx90